This 50’ flat car with fishbelly sides and side mount brake wheel is painted black with white letting and run on Barber Roller Bearing trucks. They were set up as articulated pairs in the mid-1960s and numbered 20025-20039AB for container service. Ten of the GSI cars were also paired in the early 1980s and renumbered 80000-80005AB. Also in the 1980s, cars were carrying refrigerated containers RGTU 500007 and 500011. The containers were used to transport solid fuel rocket motors, but they later re-stenciled with SEIU reporting reporting marks.